assign_at — Assignment of one or several values to one or several tuple elements.
assign_at assigns a single value to one or several elements of a tuple, or it assigns a number of values elementwise to the specified elements of the output tuple. All other elements of the output tuple keep their values. If the passed indices are out of the current range of the output tuple, the tuple is increased and the new values are initialized to a default value.
In the full text editor an assign_at operation is simply entered with the help of the assignment operator symbol := and the index access operator symbol [ ] following the output variable. The Index parameter can be any expression that evaluates to any number of positive integer values. The Value parameter must evaluate to exactly one value or to the same number of indices that are provided via the Index parameter, e.g.: Areas[Radius-1] := Area Areas[0,4,|Rad|-1] := 0 FileNames[0,2,4] := ['f1','f2','f3']
The operator assign_at replaces and extends the modifying version of the old insert operator.
Indices of teh elements that have to be replaced by the new value(s).
Default value: 0
Suggested values: 0, 1, 2, 3, 4, 5, 6
Minimum increment: 1
Value(s) that has to be assigned.
Default value: 1
Result tuple containing the assigned values.
If the expression is correct assign_at returns 2 (H_MSG_TRUE). Otherwise an exception is raised and an error code returned.